From the site:
On a road trip or stuck at the office daydreaming about the mouth-watering goodness of a Hot Original Glazed® Doughnut? Never miss another opportunity to get a Krispy Kreme doughnut Hot…Now...off the line.
With Hot Light Online you can map your nearest Krispy Kreme location from your phone and get alerts when the neon glow of "Hot Now" is activated in your area. So lookup, download or tweet your way to find a hot Krispy Kreme doughnut near you.
It's worth noting that the Whitehaven Krispy Kreme is the top-selling location in America.